Search for BGR values 0..255 (after net is unbiased) and return the index in the colour table of the colour closest to the supplied colour. TODO: consider accepting a Color rather than R,G,B integers.

public int Map(
	int blue,
	int green,
	int red
)

Public Function Map ( _
	blue As Integer, _
	green As Integer, _
	red As Integer _
) As Integer

public:
int Map(
	int blue, 
	int green, 
	int red
)